According to the given we have the following equation:
y = 20x - 6
The correct option that can be correctly summarized by the equation in the box is the option D because of the following reasons:
Option D states the following:
Denita makes 20 flower arrangements per hour. She gives 6 away. How many flower
arrangements does Denita have after x hours?
So, in this case then, denita makes 20 flower arrangements per hour. So, 20 flower arrangements per hour would be equal to 20x, because there are 20 flowers to make per x hour.
She gives 6 away, therefore, we would have to substract to the 20 flowers arrangements 6, so would be 20x-6
So, option d is the correct one